Automatic toll ticketing system



March 6, 1945.

A. J. BUSCH AUTOMATIC TOLL TICKETING SYSTEM 1o snee'ts-sheet 1 /NVENTORA. J. BUSCH BY 6%. M

ATTORNEY March 6, A BUSCH AUTOMATIC ATOLL .TICKETING SYSTEM Filed Jan.y27, 1943 10 Sheets-Sheet 2 /NVE/VTOR AJ. BUSCH A TTORNEP' March 6, 1945.At J. BuscH AUTOMATIFC TU LL TICKETING SYSTEM 1o sheets-sheet s FiledJan. 27, 1943 www \bbl. QQQI:

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UDDI] /NVEA/To/P A. J BUSCH A TTORA/Er March 6, 1945. A. J. BUSCHAUTOMATIC TLL TICKETING SYSTEM 10 Sheets-Sheet 4 Filed Jan. `2"?, 1943/Nr/E/v TOR By AJ. BUSCH @a Arme/v5? NNv AUTOMATIC TOLL TICKTING SYSTEMFiled Jan. 27, 1943 10 Sheets-Sheet 5 .ss/vain maw/r co/wvec ron F/G. 5

/NVENTOR w y .,LJBUCHv A Tron/v5l March 6, 1945.

A. J. BUSCH 2,370,712

AUTOMATIC TOLL TICKETING SYSTEM Filed Jan. 27, 1943 lO Sheets-Sheet 6 /NVEN Tof? A. J BUSCH Ma'rch e, 1945.

A. J. BUSCH AUTOMATIC TOLL TICKETING SYSTEM Filed Jan. 27, 1943 l0Sheets-Sheet 7 b /Nl/ENTOR By A. J. BUSCH ATTQRNEV AUTOMATIC TOLLTICKETING SYSTEM Filed Jan. 27,' 1943 10 `Sheets-Sham'. 9

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/A/l/E/v To@ A. J. BUSCH ATTok/vgy' March 6,1945. A J BUSCH 2,370,712

AUTOMATIC TOLL TICKETING SYSTEM Filed Jan. 27, 194s 1o sheets-sheet 1oCUT MAG/VET J@ ,pf g

PRINT MA Giver /052 /057 /NVENTOR i A. J. BUSCH v Byesww A TTORNEVsender. j

Patented Mar. 6, 1945 i UNiTEo STATES PATEN f -corr-fics 7 Claims. (Cl.f7.9-7.1) y

This invention relates to automaticticketing systems and moreparticularly to a system for supplying certain classes of subscriberswith toll charge data for completed toll calls as soon as practicableafter conversation has terminated on such calls. f y c As fullydisclosed in theapplication o f J. W. Gooderham, Serial No.j448,782lfiled June 27, 1942, it -has been proposed to enable subscribers toestablish vtoll callsuto .nearby toll points by dialing. This isaccomplished through the provision` of a `group of automatic ticketingtrunks each having `a toll ticket printer,hwhich trunks are outgoingfrom an oiiice and have access` to all of the nearby toll oiices'towhichy subscribers are given access on a dialing basis. An idlek one ofthese trunks may be seized for the extension of a connection in responseto the dialing of one, two or three digits of the oiiice designation o fa wanted line terminating in an olce of the nearby toll area and fromwhich trunkva connectionis extended by selector switch equipment. Theselector switch equipment by which a connection is extended from aticketing trunk is controlled b-y senders, anidleone ofwhichV isassociated withthe trunk by a trunk-finder individual to the sender whenthe trunk is taken for use. A.The sender is equipped with registerstorregister all ofthe digits of the wanted line number dialed by acalling subscriber, digits ofy the calling `sub-V The toll ticketsprinted by the ticket printer of all of the trunks which relate to tollcalls made by all subscribers of the oiilce or oiilce building whichsuch trunks servev are periodically transmitted to the business oice ofthe operating telephone company where` they are used to prepare themonthly bills for telephone servicev for the several subscribersaccounts.

There arev certain classes of subscribers lwho should receive theprepared toll tickets as soon as practicable following theA completionof the calls for which the vticzkets have been printed. For example, ifa hotel guest should make a toll call through the privatebranch exchangeswitchboard facilities of a `hotel Vwhose exchange lines extend toan'oilice served by an automatic ticketing system of the vtypejustzdescribed, itis desirable that information concerning the chargefor y such a call be secured by the private branch ex'- change attendantas soon as possible following the termination of Athe ,call Vin ordervthat the charge may be placed upon the guestfs hotel bill before hechecks out. ASince the automatic ticketing equipment as heretoforeproposed does not enable the ticket information tcbereadily and speedilysent to an originating callingsubscriber,

c it has been proposed to. handle toll callsfrom cient control pathsbetween anv identier and a calling trunkto enable information to betrans- 'mittedvtok the identierfrom the trunk for re- 1 calling one ofthe trunks.. Also a plurality of lsender-trunk-connector circuits isprovided for connecting the sender taken for use directly with thecalling one of the trunks for enabling the sender toA control the ticketprinter ofthe trunk in accordance .with the'registrations setup in thesuch private branch exchanges onthe usual manualbasis, that is, byinstructing/such .subscribers to originate'toll calls by dialing the Aoperator at the central oflice who then serves and times the calls. Atthe termination of the conversation l the private branch exchange'attendant flashes the A" operator vand requests the elapsed time orcharge for the call.

However, with automatic ticketing it is desirable to relieve the Aoperator of the work of dialing the callednumber and of` timing the callby 'using the automatic Vticketing facilities provided for'this purpose.vI'tis therefore the object ofthe present invention tolso modify theauto matic ticketing facilities that` theprivate branch exchangeattendant'.v may obtain the necessary charge ldata without burden'ingthe A4 operator with the unnecessarylabor'of dialing up the connection..and then .timing 'the conversational period. l

In order to accomplish `'this' each identifier is provided with.additional class; of service vequipment for enabling it to determine ifthe calling line is-one outgoing from a private branch exi change forwhich immediate charge information on a completed toll call is desiredand each sender is also provided' with an ladditional"register relayoperable fromran associated identier in response exchange class. Theidentifier isalso arranged to transmit a signal to the ticketing trunkon such a private `branch exchange call that the trunk should not timethe call or print a ticket for it. Provision is, however, made forrecording the data required for printing a ticket in a recorder atan AYeperators positionwhich is arranged tocbht'rl `aspecial tick'etp'rinterat the operators position to print a toll ticket.

In the operation of the ticketing system as modiied in accordance withthe presentimien-V tion, a toll ticketing trunk when seized on 'a callfrom a private branch exchange line proceeds, in the mannerfullyfdescribed lin the Gooderham application hereinbefore referred to,to seize an idle sender overa .trunk-finder, to associate such senderwith 'an i'dle identifier over a sender-identifier-connector and toassociate the identifier with the trunk over anidentifier-,trunkconriecto. lThe sender then receives and regis- 'tersthe data concerning 'thevwanted line as dialed by the calling'privateAbranch `exchz'an'ge attendant fand as reconstructed by the lidentifier'and the identifier proceeds 'to identify the |call- 'ing @line andthe-classther'eor-and to cause the registration of that data in thesender associated therewith. scones the -co'inplete `data concerning thecalling *"'ie has Abeen registered in the sender; the sender proceeds toassociate itself with tlieca'lling 'trunk over-a'seirder-trunbc'zoinrectoin fSx'i'oe tli'efcall is from a private branchiekchan'g''line Ithe identifierfin'forrns the .'t'urrkw-thatit 'needfnot time theJcall vor print a ticket but preparesthetrunk to enable the call tobe-"timed by'tinr'ing apparatus Yin aseparate 'recorderjcircitJQz'itfa'n A" operators position. 'These'n'der also 1iniorirrs`fthesendentrunk-con- 'nectr -ii-rotin;finocfiiied vin accordance with thepresent invention, 'that fit should transfer the ticket p'rin'tr control:conductors vvvhiclfi it norfmauy ext-ends from the sender to the ticketjp'riter'o'f the calling 'trunk to "a 'recorder at the opratorspsiuorr'The sender' also "establishes a-'circuit over thesender-*trunk-loiinector A'-`ci'r`c1.'1it to the trunk whichinstrumental insta'rtng a trunk-finder individual toian idle-recorder to"connect such 'recorder VAwith 'thefcallin'g l t'ru'nk `whereby Ycontrol"ceeis to `-tr`alrisfer allfdata registered therein rep latingto `'the'toll connection-which Ihas been "completed-under th'econtrol of the`senderto the "s'eiifed recordeljfwhere titis registered.

W hen ltl'iecalled subscriber vlanswers,'the timing 'appara-.tacitiies'end recorder is started faniproce'eds' to time @the can anni thecan is terminated" and 'to rnke 'a registration -cf the elapsed time.When the call is terminated ra termination-sfgriai'isftransmittedvoicerecorder whereupona calling lani'p'V appearing' on they Aope'rators switchbardlpostion is lighted to indicate to her "that viata" for "a j completed l'toll call has Vbeen recorded Ain "therecorder towlich the Alightedflllpfis'ilidlldilall. The Operator `then-`plugs the "ariswe'rinfg-plugj'ci fone of *her y'r'r'zgular cord icircuits into *such jack `vvh'erv'eupon to the detection of a, call ofthe private branch the recorder becomes associated with a ticket printerat her position and proceeds to control such ticket printer to printdata concerning the completed toll call on a toll ticket. As soon as theticket is completed the A operator computes the charge or reads theelapsed time of conversation from the ticket and verbally gives thefprivate branch exchangevattendant the re` quired information.Uponreceiving'the data the private branch exchange attendantdisconnects,

whereupon, the A operator disconnects and the connection established tothe ticketing trunk is released. The recorder and position ticketer andcontrol circuits also release.

As an alternative method of procedure the private branch exchangeattendant may disconnect immediately upon the termination o theconversation, the connection to the ticketing trunk, however, being heldunder the control of the recorder. After computing the charge for thecail the A operator may then originate a call to the private branchexchange toinform the attendant of thecharge -for'the call.

"For a-'clearer understanding of vthe invention reference may be had tothefollowing Idetailed description taken in connection with theaccompanying drawings in which:

-`Fig. '1 shows schematically a private branch exchange, a line-ndervandselector switches by which -a-'con'nection may be extended from a line'outgoing from the exchange to an automatic vticketing trunk;

Fig. 2 discloses such 'portions of an 'automatic vticketing trunk as areessen-tial to an understanding of the invention;

Fig. 3 shows a trunk-nder individual 'to a recorder for connecting suchrecorder to the 'trunk of Fig. 2;

Figa shows only-such portions 4of a -thousands number circuit, commonnumber connector, identifier, identifler-trunlvconnector,v sender,sender-identiiier-connector and sender-'trunkffinder as are essential-to'an understand-ing of 4the invention; v

Fig. 5-sho`ws a 'sender-trunk-connector circuit `modiiie'd in accordancewith the invention;

Figs."`6 Y'to 10, inclusive,'show the circuits of a recorder, Figs.'6,"1 and "8 showing cross bar registers 'for registering vitems ofinformation 'concerning an established toll connection transfferredthereto Afrom `4the sender and from the elapsed time switches'f'oftherecorder, Fig. 9

`showing the elapsed `time switches which-are set under the control ofthe 4'associated trunk following lthe "response'of 'Tthe f'calledsubscriber, and

Fig. v=10 showing vthe vprogress switch -of the rev cordel'. Fig. 10also shows `a y'cord circuit of an -*A loperator's positionand theticket printer of Jsuch operators position; "and Fig. 1l is a diagramshowing 'fhow the several figures of fthe drawings `-shou1d1be arrangedto 'completelydisclose the invention.

7'The 4linefinder l'll vandjsele'ctor"switches W2, 1113, 'and I U4y'schernat'ically vvdisclosed in Fig. lare of fthe-weli-knownstepby-step type, theselector switchesjbeingfdirectlyoperable 4in Vresponse to "dial impulses to''establir'sl'l'rei-therlocal lconnections within thelocal 'office' or connectionsftotoll'ticketing trunks over which connections maybe further extended tosubscribers lines 'terminating in oiices dfth'e nearby toll area."The'fsender-'trunk- The common' number 'connector 4M, Vtheidentifier-trunk-connector and the sender-identifierconnector of Fig. 4are identical with the similar connectors disclosed in full in theGcoderham ap.' plication hereinbefore referred to and thethousandsnumber circuit 4|6, the identifier 402 and the sender 40| ofFig. 4 are substantially the same 'as the similar circuits of theGoo-derham application except that provision is made in accordance withthe present invention to identify an additional class of private branchexchange lines and to register such additional class rst in theidentiiier and then in the sender at the time asso-v ciated therewith bya sender-identier-connector.

.The ticketing` trunk, portions of which are schematically disclosed inFig. 2, is similar to the trunk fully disclosed in the Gooderhamapplication except that the no-ticketing relay 201 thereof when operatedon a signal from the identifier that-no ticket for a particular call isto be printed bythe ticket printer 208 of the trunk, las on a call ofthe private branch exchange class, transfers the timing control from theelapsed time switches of the trunk to a possible connection with theelapsed time switches of a recorder.

`The sender-trunk-connector circuit of Fig. 5

is one of a plurality effectiveto associate a, seized y sender with acalling trunk. One of `these circuits would be provided for eachsubgroup of ten ticketing trunks and that o-ne of these circuits istaken for use as determined by the operation of the sender-trunk-nder400 in associating a sender with the calling ticketing trunk. Theseconnector circuits are in general similar to the corresponding circuitsof the Gooderham application but vhave been modified in accordance withthe present invention to control the starting of arecorder-trunk-finder, such as is shown in Fig. v3, if the privatebranch exchange register of the sender is operated toi indicate that thecall is of the private branch exchange class and to. provide a transferrelay whereby the printer control conductors usually extended by theconnector circuit tothe printer of the trunk are transferred forextension to registers of a recorder. i

The elapsed time register switch 900 of Fig. 9 for registering the unitsdigit of the elapsed time of a toll call and the progress switch |000 ofFig. 10 are of the rotary step-by-step type,l the brushes of which areadvanced step by s tep upon the release of their respective steppingmagnets 90| and |00I. These switches are restored to normal by theintermittent operation of their stepping magnets to continuethe forwardrotation of their brushes.

time of a toll call is of the rotary step-by-step typel which isadvancedl step by step upon the i release of its stepping magnet 95| andis restored by the operation of its release magnet 952. Moreparticularly, the elapsed time switches 900 and 950 are similar to thecorresponding switches disclosed inthe trunk circuit of the Gooderhamapplication and the progress switch |000 is similar to the progressswitch of the sender disclosed in that application. y

The ticket printer |050 associated with the "A operators position is ofthe type disclosed in the U. S. Patent to W. J. Zenner, No. 2,309,688,granted Feb. 2, 1943. Y v

The registers disclosed in Figs. 6, 7 and 8 are of the cross bar typeeach having one hundred sets of cross-point contacts arrangedcoordinately in ten vertical rows of ten sets each. A contact set in any`vertical row is selectively operable by the conjoint operation of ahorizontalbar under the.

control of la select magnetA such as the magnet The elapsed timeregister switch 950 of Fig. 9 for registering the tens digit of theelapsed of Fig. 6 and of a vertical bar under the control of a. holdmagnetsuch as the magnet 6H. The hold magnet ofthe three registerswitches also serve as a progress switch so that in response to therepeated operation of the-select magnets contact sets in successivevertical rows of the registers are operated.

To enable a clearer. understanding of the invention and the mode of itsoperation the manner MAR-1345. .The attendant at the private branch A.

exchange, to serve this call, causes a connection to be established withthe line |05 outgoing from the private branch exchange switchboard vandterminating in the bank of a line-finder such as |0|. The line-finder isthereupon started to find such calling line and uponmaking connectiontherewith-the usual dial tone is transmitted to the private branchexchange to inform the attendant that she may proceed to dial the digitsof the subscribers line number with whom the guest desires a connection.It will be assumed that in response to the dialingof the ofce codeletter M the selector switch |02 is operated to select an idle ticketingtrunk 06, portionsy of which are disclosed inFig. 2.

- Upon its seizure the line relay (not shown) of the trunk is operatedand causes the starting of the sender-trunk-flnder associated with anidle sender to hunt for and connect with the seized trunk |06. It willbe assumed that the trunkiinder 400, the brushes only of which aredisclosed in Fig. 4, and which switch is associated with the sender,portions of which are illustrated -within the dot-dash rectangle 00| ofFig. 4, makes connection with the trunk |06. Also upon the seizure ofthetrunk, the sleeve relay 200 thereof,

which is individualized to the terminal bank apwinding of relay 200,lthrough the winding of relay 202 to battery and in parallel with thewinding of relay 202, over the back contact of relay 202 and throughresistance 203 to battery. Relay 200, upon operating, locks from batterythrough its lower winding and over its upper contacts to groundconnected to conductor 204 through the operation of relay 205, whichlatter relay operated following the seizure of the trunk |06 and theoperation of the line. relay of such trunk. The locking ground for relay200 is also connected over its lower contacts to sleeve conductor 20| ofthe trunk |00 for holding the operated line'nder |0| and selector switch|02 from releasing. The sleeve relay 200 also prepares a circuit overitsk inner lower contacts over whichthe identifier is given informationconcerning the digit values of the code letters `dialed to extend aconnection to the trunk |06.

Following the seizure of the trunk |05, the next digit dialed by theprivate branch exchange attendant is registered in `a digitregister (notshown) but forming a part of the trunk. In the case assumed, the digitvthus registered is the second codev letter A having a numerical value of2. In the meantime the sender 40| has become connected to the trunk. bythe trunk-iindcr 400 and` the remaining digits of the wanted linenumber, that is, the third code letter R, having a digit value of '7,the thousandsr digit 1, the hundreds digit 3, the tens digit 4 and theunits digit 5, become registered in dial pulse registers of the sender.As soon as one digit has been. registered in the ender40| it causes theconnectionv of the sender to an available calling line identifier overcontacts of a senderidentirler-connector. It'v/ill be assumed' that theidentifier, a portion of which is disclosed within the dot-dashrectangle 402, is taken for use and is connected to the sender 40|- overcontacts of the multicontact relay 403 constituting a portion of thesender-identifier-connector. Upon its seizure the identifier becomesconnected to the ticketing trunkl |06 serving the assumed toll call overcontacts; of the multicontact rrelay 404 forming a partici the identiertrunk-connector circuit which serves the subgroup of twenty trunks inwhich the trunk is located and as determined through the setting of thesender-trunk-finder 40|).`

With the sender connected to the trunk over the brushes of thetrunk-nder 400 and the pre-ference relay (not shown) of theidentifier-trunkconnector which is individual to the identifier 402operated,` the circuit of the identier-connectcr relay 206 of the trunkis completed and such relay operates. With relayt of the trunk andmulticontact relay 404 of the identier-trunkconnector both operatedcontrol circuits are established from the trunk to the identifier. Overoner of these circuits battery is applied from the identier over aconductor of cable 406, contacts of relay 404, conductor 408 of cable407,A the upper No.- 4, contacts of relay 206, the inner lower contactsof sleeve relay 200, conductor 400 of cable 401, contacts of relay 404and over a conductor of cable 406 to the identier over which circuit.the identifier is given information with respect to the oce code letterwhich was dialed to seize the trunk |06, in the case assumed that thesingle office code letter M was dialed. Over another of the circuits,battery is applied from the identier over another conductor of cable408, contacts of relay 404, conductor 4|0 of cable 4'0`lrth'e upper No.3 contacts of relay 20S, thence over the brush and a bank terminal ofthe digit register of the trimk (not shown), assumed to have `been setto register the second coder letter A, thence back over a conductor ofcable 401, contacts of relay 404, and a conductor of cable 400, to aregister relay in the identifier 402 whereby the second code letter A,having the numerical value of 2, registered in the trunk reglster, istransferred to the identiiier. The setting of the first dial pulseregister of the sender 440| in which the third code letter R wasregistered, is also transferred over circuits established between thesender andthe identifier over contacts of relay 403 of thesender-identifierconnector to set a register in the idcntier; Theidentifier now having all of the datawhich it requires to reconstructall of the oliice code letters of a Wanted line number dialed by theprivate branch exchange attendant, proceeds to reconstruct such oihcecode letters in digital form and to set registers in the sender 40| toregister such digits. In the case assumed certain of 'the called linenumber registers of the sender are set from the identifier to registerthe celled office code digits 6, 2A and "i, the remaining numericaldigits of the: Wantedl line number being-.registered'in the dial Vpulseregisters of the sender. j

When the identifier was seized, it also esta lished a circuit from the27o-cycle source of al-Q ternating current 4| over contacts ofmulticantact relay 404 of the identifier-trunk-connector, conductor 4|2,the upper No. 1 alternate contacts ofidentier-connector relay 200 of thetrunk |06, over the upper and lower contactsv of sleeve relay 200,sleeve conductorl 20|, and thence over the connection established overbrushes of selector |02 and line nder I0| tothe sleeve conductor |08 ofthe private branch exchange line |05 to mark thisline ascalling withrespect to the identier 402. The identifier then proceeds over contactsof a tip or ring field relay 4|3 of the common number connector 4I4, andback contacts of relay 4I5 of the thousands number circuit 4|6 to testfor the presence of the identification tone current on the sleeves oflines terminating in the thousands coils 4H of the thousands numbercircuit of all olice. units located in the same office building and tomake registrations of the office unit and thousands group in which thecalling line |05 is found. In accordance with the thousands groupregistration the thousands group connector relay 4| 0 in the thousandsnumber circuit 4I6 in which the sleeve conductor branch |09 of thecalling linev appears, is operated whereupon the identier proceeds overcontacts of relay 4|0 of the common number circuit 4|4, and contacts ofrelay 4|0 of the thousands number circuit 4|6, to test for the presenceof identification tone current on the sleeves of lines terminating indifferent hundreds coils 420 of the selected thousands number circuitand to make a registration of the hundreds group in which the sleeveconductor branch |09 of the calling line appears. When the hundredsgroup registration hasabeen made the identifier operates the correevsponding hundreds group relay 42| of the thou-f sands number circuit andthen proceeds over `cir cuits established over its contacts and contactsof relay 4I8 to test Vfor the identification. tone current on the sleeveconductor branch |09 of the calling line to determine the tens group ofthe selected group and the line terminal position therein and to makeregistrations thereof.V The identifier thus identifies the oinceunit andthe connector terminal number of the calling line.

Atthe same time that the identier is determining the identity of thecalling line it is also functioning to determine the class of such line;All central oflice lines which serve private branch exchanges, such asthe line |05, each hasv the branchy of its sleeve conductor, such as thebranch |00, connected through a condenser-resistance network comprisinga condenser 422 andv resistance 423 to a contact of the hundredsconnector relay which serves the hundreds group in which such line islocated and is thus extended upon the operation of the hundreds grouprelay, for example relay 42 l, over contacts of the class connectorrelay 424 of the common number circuit', through thelter 42 5 and theprimary Wndingof the input transformer 426 of the amplifier de-` tectorcircuit 421-, and through the filter 425 to ground. 'Ihe tone currentappliedto the sleeve conductor |08 of the private branch exchange li'nefrom the source 4| I4 at the identier is thus impressed' upon the inputcircuit of the amplifier tube 428, is amplied by such tube and impressedupon the input circuit of the detectortube 420 which responds and causesthe operation ofthe vanode relay 430. Relay 430 upon operatingdn turnoperatesfrelay 43| Vto register the vfact that the call originatedonaline of vthe private branch exchange class. v

Relay 43| uponoperating establishes a circuit from ground over its uppercontacts, contacts of .relay 404 vof the identifier-trunk-connector,conductor 432, theNo. 5 upper contacts of the identifier-connector relay206 of the trunk |06, to battery through the lower winding of thenoticketing relay 201 which operates and locks over its upper frontcontact to. ground over the inner upper contacts of relay 205. Theoperation of relay 201 informs the trunk that no ticket for the call isto be printedby the ticket printer 208 of the trunk and that the elapsedtime registering switches of the trunk need not therefore be setfollowing the response ofv the called subscriber.

Relay 43| also establishes a circuit from ground over its lower contactsand contacts of relay'403 of the sender-identifier-connector to batteryVthrough the winding of the private branch exchange class relay 433 ofthe sender 40|, which relay operates and locks over its inner' lowercontacts to the off-normal ground busA bar of the sender. As soon as allof the calling. .line identiflcation digits have been registered in theidentier 402, such registrations are trans erred over circuits extendingover contacts of relay 403 of the sender-identier-connector to an oiceunit and numerical digit registers in the sender 40| to register in thesender the identification digits of the :calling lprivate branchexchange line. As soon as all of the registrations havebeen transferredto the sender, the sender-identier-connector relay 403 is releasedwhereupon the identier 402, common numberY connector 4|4, thousandsnumber circuit 4|6 and identifier-trunkconnector are released. Relayf434of the sender is also operated to initiate the operation of one of thesender-trunk-connectors to establish additional control pathsfrom thesender to the calling ticketing trunk.

It will be assumed that, as determined by the setting assumed by thesender-trunk-nder 400 in connecting the sender. 40| to the trunk |06,access to .the subgroup of ten trunks in which the trunk |06 islocatedmay be secured through the sender-trunk-connector Acircuit of Fig. v5',

there being ten of such circuits if there are one hundred' ticketingtrunks. Therefore, when relay 434 operates, a circuit is establishedfrom battery over its upper contacts, the upper brush of thesender-trunk-nder 400, over theloW'er of the trunk. With ,multicontactrelays 502F and 505 both operated a plurality of circuit paths areprepared between the sender 40| and the trunk |06 which are ordinarilyemployed on a `call fo-r which theiticket printer 208 of the. trunk isto print,` a ticketto control the operation of the ticket printer inaccordance with toll data registered in the sender. The operations `ofthe -circuits thus far described are brought about in the manner fullydescribed in the application of Gocderham hereinbefore referred to withthe exception Aof the operations just described incident to theoperation of the yprivate branch exchange classre'gister relay 43| oftheidentier.

4Since the call under consideration is assumed to Ibe froma privatebranch exchange line and private branch exchangeclass register relay 433of the sender has therefore been operated, then with multicontactl relay502F. operated, a circuit is established for transfer relay v506 of thesendercontacts of relay 5021i', from their connection over contacts ofrelay 434, conductor435, through the winding of preference relay 500E'of the sendertrunk-connector circuit appertaining ,to the subgroup often trunks in which the trunk |06 is' located and which relay isindividual to the iirst sender 40 to groundover the inner upper normalcontacts of preference relays of such. connector circuit individual toother senders,l such as relayY '500L individual to the last-sender, ifthe sendertrunk-connector -circuit is not being used by another sender.Relay 500F, upon operating, lock-s over its inner upper alternatecontacts to ground,

Ithe Winding of multicontact relay 505 allocated to the calling trunk|08, over conductor 209 to .ground at the back contact of tip partyrelay 2 |0 contacts ofrelay 505V to the* ticket printer 208 of the trunk|06, to the multipled contacts of the recorder connecting relays 501B'to 50`|L. A

start circuit is alsoestablished tostart a trunk-l iinder individual toan idle .recorder.A I f n It will -bel assumed that thevrecorder-trunknder 300 of Fig. 3 which is the rst cho-ice preference forthe subgroup of trunks in which the calling trunk is located and whichsubgroup of trunks is servedA by thel sender-.trunk-connector of Fig. 5is idle. A circuitis therefore established from `ground over the backcontat of relay 440 of the sender, over the upper front contact of relay433, conductor 44|, the No. 20 contacts of relayl 502F, the No. 28contacts of relay 505 and conductor 508 ,to battery through theywindingof trunk group relay 30|. .Relay 30| upon operating establishesa circuit from ground over the. upper back contact of relay 302, the`upper contacts of relay 30|, over in-start conductor 303, over themiddle normally closed contacts of the testand busy jack304of the trunkyfinder 300, the inner-upper normal contacts of relay 305, through theWinding fof start relay 306 to battery and gro-und. y. Relay 1306. upon.Qlerating Yconnects ground over its inner ,upper front contact to con--ductor 301 and causes theoperaton of the stepping relay 308 in a circuitextending from ground over its lower front contacts, interruptercontacts over the lower contacts of relay 306, over the contacts oflrelay.308, the upper back contact. of rev lay 3| I, through the windingof magnet 309 and tobattery overthe inner lower back rcontact ofrelay305. `The "brush shaft fof the nder is thereby lifted one step,.placingthe commutator brush 3| 2 on the rst wired segment of the vverticalcommutator 3|3." The'vertical off-normal springs 3|4 are now operated totheir` alternate positions and the` circuit of relay 308 is opened atthe interrupter contacts of magnet 309. Relay 300 nou/releases inturnreleasing magnet 309 which in turnrecloses the circuit ofrelay- 308,relay 308 then reoperating and causing; thereoperation of magnet 308. Inthis manner magnet 309 is repeatedly operated andreleased to advance thebrushes upwardly step by step until the commutator brush 3I2 engages thesegment 3 I 5 to which ground has been connected through the operationof the trunk group relay 30|, whereupon a circuit is established fromground on such segment over brush 3I2, through the lower winding ofrelay 3! I, over the interrupter contacts of rotary magnet 3 I 0,through the lower winding of relay 300 to battery and ground over theinner lower back -contact of'relay 305. Relay 308 is thus held operatedto prevent further stepping and relay 3l I, which is slow'to operate,opcrates after an interval sufiicient to permit the switch brushes tocease vibrating 'following the completion of their last verticalstepping movement and before they are started on their rotary steppingmovement.

When relay 3II operates it locks in a circuit from battery over theinner lower back contact of relay 305, through the Winding of magnet309, through the upper winding and inner upper front contact of relay 3lI to ground at the lower contacts of relay 306; opens at its inner lowerback contact the circuit extending over the lower contacts of theofi-normal springs 3I4 through the winding of release magnet 3I6 andtransfers the stepping circuit control of stepping relay 308 from thevertical magnet 309 to the rotary magnet 3I0. With stepping relay 308now operated the circuit of the rotary magnet 3I0 may be traced fromground over the lower contacts of relay 306, contacts of relay 308,upper front contact of relay 3H through the winding of magnet 3I0 tobattery and ground. Magnet 3| 0 upon operating advances the4 brush setsof the finder 300 one step in a rotary direction and opens at itsinterrupter contacts the holding circuit for relay 308 previously tracedand the operating circuit thereof extending fronr groundI over the lowercontacts of relay 306, the interrupter contacts of magnet 309, theinterrupter contacts of magnet 3I0, thelower Winding of relay 308, tobattery over the inner lower back contact of relay 305, whereupon relay308 releases in turn releasing magnet 3I0. Magnet 3I0 upon releasingreestablishes the operating circuit of relay 308 which in turnreestablishes the circuit of magnet 3I0 to advance the brush set anotherstep in a rotary direction. In this'manner the brush sets are advancedstep by step until the test brush 3I'I encounters the test terminal 3I8of the calling trunk.

It has been assumed that the calling trunk of Fig. 2 appears in thelastterminal set of the bank levels of the trunk ilnder 300corresponding to the commutator segment 3I5, which levels are partlyshown, and therefore when the brush sets have been stepped vertically toa position opposite such levels in the banks as illustrated and havebeen advancedxtensteps in the rotary direction into engagement with thelast terminal sets of such levels, ,a circuit will be established frombattery through the winding of relay 440 of the sender, overthe innerupper front contact of relay 433' of the sender, conductor 442, the No.19 contacts ofrelay 502F, the No. 27 contacts of relay 505, conductor509, to the test terminal 3I8, thence over test brush 3I'I, through thelower winding of relay 3I9, the. upper back contact of relay 305,through the upper windas'voma ing of relay 308 to ground on conductor301. Relay 308 is held operated over this circuit to prevent furtherrotary stepping of the switch ybrushes and relay 3I0 operatessufficiently to close its inner upper contacts thereby establishing acircuit from battery through its upper winding and over such contacts,.over the lower contacts of rotary magnet 3I0 and .contacts of relay 308to ground over the lower contacts of relay 306. Both of its windingsbeing now energized, relay 3I9 fully operates to extend controlconductors 2| I to 2| 8, inclusive, of the trunk, over brushes 320` to325, inclusive, of the trunk finder 300 and the. contacts .of relay 3I9to conductors 326 to 33I, inclusive, extending to the recorder shown .inFigs. 6 to l0, inclusive; to cause the operation of relay 305 in acircuit extending from ground over the off-normal springs 314, the No. 3upper'front contact of relay 3I'9; through the lower winding of relay305 to battery and ground; to open at its upper No. 3 back contactanother point in the circuit of release magnet 3I6 and to prepare alocking circuit for itself over its upper No. 1 front contact which willbe eiective .following the operation of relay 305.

Relay 3&5 upon operating extends a connection from conductor 509', overbank terminal 3I8 and brush 3H, the upper No. 2 contacts of relay 319and the upper front contact of relay 305 to conductor 307 extending tothe recorder; completes the locking circuit of relay 3I9 extending frombattery through the upper winding and No. l upper contacts of suchrelay, over the lower front contacts of relay 305 to ground on conductor307; opens the circuit through the lower winding of relay 3I9 to thetest brush 3H; trant-` fers at its inner upper contacts the in-startconductor 303 from the winding of the start relay 306 to the out-startconductor 332 and through the upper winding of relay 305 to batteryr atthe upper back contact of relay 333; at its inner lower back' contactremoves battery from the windings of relays 308 and 3H and from thevertical magnet 300 and' at its upper'front contact shunts the upperwinding of relay 308. Relays 308 and 3II now releaseand relay 306 beingslow to release releases afterY an interval suiiicient to allow groundto be applied to conductor 301 at the recorder to hold relay 3I9 andrelay 400 of the sender operated. When relay 3II releases the continuityof the out-start conductor is established at its lower contacts wherebyif a second trunk in the same subgroup should be in a calling conditionground placed on the instart conductor 303 will be effective to startthe second trunk-iinder of the same subgroup of finders if it is idle,over a circuit extending from conductor 303 over the middle normalcontacts of test jack 304, the inner upper front contacts of relay 305,the lower normal contacts of relay 3I I, conductor 332, the lower normalcontacts of test jack 304, the middle normal contacts of test jack 30.4associated with the second trunk-finder of the same trunk-finder groupand over the inner upper normal contacts of relay 305' to the startrelay of such finder corresponding to relay 306. When relay 440 of thesender operated as previously described, it opened the previously tracedcircuit for group relay 30I and that relay releases if no other trunk ofthe same subgroup is at the time seeking connection with a recorder.-

With relay 3I9 of the recorder-trunk-iinder 300 operated a circuit isnow established from l ground through the upper winding of relayconductor 321-, the No.5 upper contactsv of relay 3|9, brush 32| ci' thetrunk-nder, conduc-` tor 2 I2, thence over the tip conductor of theconnection establishedy over tip brushes of the selector` |02 andline-finder |0| to the private branch exchange and returning over ringbrushes of the line-iinder and selector, ring conductor 2|3, brush 322of the trunk finder, the No. 4 upper contacts of relay 3|9 and`conductor 328 to battery through the lower winding of relay 906. Relay963Vv operates Vand closes an obviouscircuit for slow-to-release relay909 which operates,v locks over its inner upper contactsy and conductor9|0 to ground over the back contact of relay |006; connects ground overvits upper contacts to conductor 301 to hold the operated relays ofthetrunkender 300 and relay '440 of the sender; supplies oit-normal groundlfor apparatus of the recorder; lconnects ground over its inner lowercontacts to conductorlf329, thence over the lower No. 3 contacts ofrelay '3|9, brush 323 and conductor 2| 4 to conductor 204 'for providingholding ground for the operated'selector switch |02 and the line-iinderIIJI, and over its upper middle contacts establishes a l"circuit fromground over conductor 334, the No. 2 lower contacts of relay 3 I9, brush335,l oonductorv'Z I8, over the No. 1 contactsof relay v505 of thesender-trunk-connector circuit to bat-v *tery through the'winding ofrelay 5|J1F." Relay 501F thereupon operates to complete the extenlsionnfcontrol conductors from the sender to 'therecorder which has' beenconnected to 'the trunk by the recorder-trunk-i'inder 303. With relay501B" operated, a circuit is established from ground over its No. 1contacts,l the No. i contacts of transfer relay 503, the No. 2 contactsof relay 502F, conductor 443 and through the lower contacts of theprivate Ybranch exchange register relay 433 ot thesender to ad- Vancethe progress switch'of the sender to its rst control position -fortransferring thefirst item lof information concerning the establishedtoll'connectionwhich has been registered in the sender'to the recorder.4

l It will be assumed that the sender has registered the following data:calling office code digits '283; 'calling linenunierical digits 9095;sender No. ilO;V identiiier No. 0; `called oflice code digits 627'*1called line numerical digits'1345; digit 5 `'indicative of the class ofthe callingvline and digit 2 indicative of the charge rate for theinitial period of conversation and that themonth, day and hourcircuitwhich becomes assooiatedvwith the sender has registered the date andtime when i the call was made as 9.36 cclock on December 25 as"indicated by the digital settings of its registers 1225096. lTheprogress' switch of the sender 'therefore proceeds to control theregistration of digits in the selected recorder in accordance with 'thisregistered information. The progress switch ofthe sender as fullydisclosed inthe Gooderham application is arranged to rst control aticket printer to print `two asterisks on awt'oll ticket to indicate thebeginning of a new vticket f of the printing or these characters at theproper points during the printing of a toll ticket by thepositionticketjprinter |050 may be readily exerfcised'bythe progressswitch |000. of the recorder as willv later appear'. f f

With the progress switch ofv the vsender advanced to its first controlposition as previously described, ground'is connected by the progressswitch toy control conductor 444 over the No. 17 contacts of relay502F,the No. lf'ront contac'tsof relay 506, the No. 16 contacts'ofrelay 501F,conductor 63| to battery through the winding of relay 632. Relay 632thereupon operates and connects ground to conductors 633 and 634whereupon av first circuit is established ifrom ground on conductor 633over the No. 12 con# tacts of relay 501B', the No. 12 front contac't'ofrelay 506, theNo. 13 contacts of relay 5021 and conductor 445 to batterythrough the stepping relay of the sender 'progressswitch,'and a secondcircuit is established from ground on conductor 634 over the No. 13contacts of relayv 5011, the No.A 13'front contact of relay 506, theNo.' 14 contacts of relay 502F, and conductor 446 to the lockingcontacts of the stepping relay. stepping 'relay of the progress switchoi the sender is thus controlled to cause thefadva'nce of the brushes ofsuch switch to their next control position and tofopen the circuit ofrelay 632 of theV recorder inthe manner fully disclosed in the Gooderhamapplication above referred to. With thefbrushes of the progress switchin 'their next control position, relay 632 of the recorder is againoperated and under its control the progress switch is again advancedanother 'step to a position for,A controlling the registration the iirstcalling oii'ice code digit.

It has been assumedrthat the first digit of the calling Voflice code asregistered in the sender is 2. Therefore, `al circuit is establishedfrom ground over a brush of the progress switch and under the control ofthe office unit register of the sender to magnets are energized torotate their associated ground is maintained connected to conductor 635from the sender," relay639 does not operate. With relay 636 operated andrelay639 not operated, a circuit isestablished from v'ground overtheright front contact of relay 636, the right back contact of relay633,overthe inner lower normal contacts and through the winding of the firsthold magnet 6| I of the register of Fig. 6 to battery. Hold magnet 6|thereupon operates, ylocks over its inner lower alternate contacts toground on con# 'ductor 638, rotates the Afirst vertical hold bar whichin conjunction with the select bar operated The by select magnet 602operates the cross-point con-'- tact set 64 I, and establishes acircuitfrom ground applied from the sender over contacts of magnet 602over rthe upper front contact of magnetv6| I,

the upper back contactofmagnet'GIZ, the left contacts of the operatedcross-point contact set 641-, conductor 642, through the winding ofrelay 643 to battery. Relay 643 thereupon operates and at its rightcontacts connects ground toconductors 633 and 634 for controlling theadvance of the progress switch of the sender. When the progress switchadvances preparatory to controlling the transfer of the registration ofthe next calling oilice code digit, ground is removed from controlconductor 622 whereupon .magnets 6021 102 and 802 release and ground isremoved from conductor 635 whereupon relay 639 operates in a circuitfrom ground on conductor 638, over the left alternate contacts of relay636, through the winding of relay636 and resistance 640 to battery. Withmagnet 602 now released, the operated crosspoint contact set 641 is heldin its operated position by the hold magnet 6| 1. The removal of groundfrom conductor 622 also releases relay 643.

It has been assumed that the second digit of the calling oirlce code asregistered in the sender is 8. Therefore, a circuit is now establishedfrom ground over a brush of the sender progress switch and under thecontrol of the office unit register of the sender to control conductor458, over the No.1() contacts of relay 5026', the No. 9 front contact ofrelay 506, the No. `9 contacts of relay 5011, conductor 628 through thewindings of the No. 8 select magnets 601, 108 and 808 in parallel tobattery. 'I'hese magnets all energize to rotate their associated selectbars and magnet 608 upon operating extends its operating ground over itscontacts, conductor 635, over the left front contact of relay 639 to aIpoint between the winding of relay 636 and resistance 631 whereuponyrelay 636 is shunted down and releases, relay 638 now being heldoperated from ground on conductor 635, o'ver the left normal contacts ofrelay 636 andthrough its own winding and resistance 640 to battery. Withrelay 636 unoperated and relay 639 operated, a circuit is nowestablished from ground over the right back contact of relay 636, overthe right front contact of relay 639, over the lower contacts ofoperated hold magnet 61 I, over the inner lower normal contacts andthrough the winding of hold magnet 6 I 2 tobattery and ground. Holdmagnet 612 thereupon operates, locks over its inner lower alternatecontacts to ground on conductor 638, rotates the second vertical holdbar which, in coniunction with the select bar operated by select magnet608 operates the crosspoint contact set 644, and establishes a circuitfrom ground applied from the sender over contacts of magnet 608, overthe upper front contacts of magnet 6 1 l and 612, over `the upper backcontact of magnet 613, the left contacts of the operated cross-pointcontact set 644, through the winding of relay 643'to battery.. Relay 643thereupon operates and at its right contact connects ground toconductors 633 and 634 for controlling the advance of the senderprogressswitch. When the progress switch advances preparatory .tocontrolling the transfer of the` registration of the next calling officecode digit, ground is removed from control conductor 628 whereuponmagnets 608, 108 and 808 release and ground is removed from conductor635 whereupon relay 636 releases.

Magnet 608 upon releasing also opens the circuit of relay 643 which thenreleases. With magnet 608 now releasedi the operated cross-point contactset 644 is held in its operated position by the hold magnet 612.

' It has been assumed that the third digit of the callngoilice code asregistered in the sender is 3.

Therefore a -circuit is now established from ground 4 over a brushof thesender progress switch and under the control of the oice unit registerof the sender to control conductor 453,.,over the No. 5 contacts ofrelay 502F, the No. 4 front contact of relay 506, the No. 4 contacts ofrelay 501F, conductor 623, through the windings of the. No. 3 selectmagnets 603, 103 and 803 in parallel to battery. These magnets allenergize to rotate their associated select bars and magnet 603 uponoperating extends its operating ground over its contacts, conductor 635,over the left normal contacts and through the winding of re1ay.636 andthrough resistance 631 to battery, whereuponrelay 636 operates and locksin the manner previously described. With relay 636 operated and relay639 unoperated, a circuit is now established from ground over the rightfront contact of relay 636, the right back contact of relay 639, theinner lower front contact of relay 6| I, the lower front contact ofmagnet 612, over the inner lower normal contacts and through thewindingof hold magnet 613 to battery. Hold magnet 613 thereuponoperates, locks over its inner lower alternate contacts to ground onconductor 638, rotates the third vertical hold bar which in conjunctionwith the select bar operated by select magnet 603 operates thecross-point contact set 645, and establishes a circuit from groundapplied from the sender over contacts of magnet 603, over the upperfront contacts of magnets 611, 612 and 613, over the upper back contact`of magnet 614, the left contacts of the operated cross-point contactset 645, through the winding of relay 643 to battery. Relay 643thereupon operates and at its right contacts connects ground toconductors 633 and 634 for controlling the advance of the senderprogress switch.. When the progress switch advances ground is removedfrom control conductor 623 whereupon magnets 603, 163 and 803 releaseand ground is removed from conductor 635 whereupon relay 639 opcrates inthe manner previously described. Magnet 603 upon releasing also releasesrelay 643. With magnet 663 now released the operated cross-point contactset 645 is held in its operated position by the hold magnet 613.

The sender progress switch in the terminal position to which it has nowbeen advanced would normally be instrumental in controlling the ticketprinter of an associated trunk to print a dash on a toll ticket toseparate the three calling oilice code digits previously printed on theticket from the four numerical digits of the calling line number to besubsequently printed, but with the sender connected to the recorder theprogress switch causes the connection of ground to control conductor441, over the No. 16 contacts of relay 502B', the No. l5 front contactof relay 506, the No. 15 contacts of relay 50111', conductor 646, tobattery through the winding of relay 632. Relay 632 thereupon operatesand connects ground to co-nductors 633 and 634 for controlling theadvance of the sender progress switch into a position for controllingthe registration of the first numerical digit of the calling line numberin the register circuit of the recorder. Upon the advance of theprogress switch ground is removed from control conductor 646 whereuponrelay 632 releases.

In the next four positions of the sender progress switch. assuming thatthe numerical digits of the calling line number registered in the senderare 9, O, 9, 5, control conductors 623, 630, 629 and 625 aresuccessively grounded to cause the successive operation'of the selectmagnets "609,` 6I0, 609 and 605 and the successive operation of the holdmagnets 6I4, 6|5, 6|6 and 6|1 under the control of relays 636 and 639 inthe manner previously described, whereby .the cross-point contact setsy641, 648, 649 and 650 are operated to register the thousands digit 9,the hundreds digit 0, the tens digit 9 and the units digit'5 of.

the calling line number.

Following the registration of the units digit of the calling line numberthe sender progress switch is advanced into its next terminal positionin which position it would normally control the ticket printer oi anassociated trunk to print a dash to separate the calling line numericaldigits printed on the ticket from the digits' of the date' and time ofday to be subsequenly printed." But with the sender associated withtherecorder, the progress switch connects ground to control conductor 646for operating relay v632, which, upon" operating. connects ground toconductors'633 and 634 for controlling the advance of the sender gressswitch, assuming that the tens and units digits of the sender number areand 0 and that the number ofthe 'identifier used is also 0, controlconductor 630 is successively grounded-three A times to cause thesuccessive operation of the number digit, kthe sender progress switch isadvanced into its next terminal position in which position it wouldnormally lcontrol the ti`cket printer ofthe associated trunk to print adash tov separate the digits of the sender and identifier progressswitch into a position for controllingl the association of Aan availablemonth,` day andy hour lcircuit with the sender, as fully set forth inthe Gooderham application hereinbefore referre'dto. Thereupon theprogress switchY is advanced into its next terminal position preparatoryto controlling the registration in the re-` corder of the rst digit ofthe month as secured from the month, day and hour circuit. Inthisposition and the next Y'six positions, assuming that the digits of themonth are 1 and 2 to indicate themonth to be-December, the Adigits ofthe day of the month to be 2 and 5 to indicate :thea th day of themonth, the digits of the'hour of the day to be Oand'Q to indicate theninth hour of the day and the digit of the fractional part of the hourto be 6 to indicate thirty-six minutes past the hour, control conductors62|, 622, 622, 625, 630, 629 and 626 are successively grounded by theprogress' switch to cause thel successive operation of the selectmagnets 602, 602, 105, 110, 109 and '106,and the successive operation ofthe hold magnets 6l8, 619, 620,1I|,1|2,1|3'-and 1| 4 under the controlof relays 636 and 639 in the manner previously described.

hold magnets, cross-point contact sets 65|, 12|, 122, 123 and 124 areoperated. Following the registration of theA last digit of the time ofday as secured from the month, davvv and hou'r circuit thesenderprogress switch is advanced into its next positionin whichposition the connection between the sender and the month, day andhourcircuit is released and the? progress switch is then advanced intoits' next terminal position in whichl it would normally controltheticket printer of the associated trunk' Under* the` joint control ofthe operated select magnets and toconductors 633 and 634 for controllingthe ad,

Vance of the sender progress vswitch into a positiori for controllingthe registration in the re- Upon the advance of the progress switchground is removed from control conductor 646 whereupon relay 632releases. ,Y

In the next three positions of the sender'pro'- numbers" printed on theticket from the digitsof the called ofiice code to be subsequentlyprinted. But with the sender associated with the recorder the progress,switch connects groundv to control conductor 6:46 for operating relay632which, upon operating, connects ground to conductors 633 and 634 forcontrolling the advance of the sender progress switch into a positionfor controlling the registration ofthe iirst oiiice code digit of thecalled line number. Upon the advance of the progress switch" ground isremoved from control 30 conductor 646- whereupon relay 632 releases. l

In the next three positions of the sender progress switch assuming thatthe called oiiice code digits registered in the sender are 6,2 and 7,control conductors 626, 622 and'621 are successively grounded to causethe successive operation of the select lmagnets 106, 102 vxand 101 andthe vsuccessive operation of hold magnets H8, 1,!9 and 120 under thecontrol of relays 636 and 639 in the manner previously described wherebythe cross-point contact sets 128, 129 and 130 are operated, to registerthe called oice code digitsy 6, 2 and 7./

. rFollowing the registration ofthe last I,calledl office code digit,the sender progress switch is ad'. t

vanced into its next terminalpositionin which position it would normallycontrol the cut magnet ofa; trunk to sever from the ticket roll the fticket printed for the preceding call, but Lwith the' sender associatedwith the recorder the progress' switch connects ground to conductor 448thereby establishing a circuit from such con'` ductoriover the No. 15contacts of relay 5021i', the No. 14 front contact of relay 506, the No.14 contacts of vrelay 5011i', over conductor v654 Vto* battery throughthe winding of relay 632. Relay 632 upon operating connects groundtoconductors 633 and 634 for controlling the advance of the senderprogress switch to its next terminal position whereupon relay 632releases.' In this position the progress switchnormally controls theticket printer of the associated trunk to print a dash to separate theprinted calledoice code digits from the called number numerical digitsto be subsequently printed. But with the sender associated with therecorder the progress switchA connects ground to control conductor 646for operating relay 632 which connectsv ground to "conductors 633 and634 for controlling the ad-L Vance of the sender progress switch into aposition yfor controlling the 'registration ofthe-,first numerical digitof the called line number whereupon relay 632 releases.

gress switch .assuming that the called .line Anil-- merical .digits.registered .in .the .sender .are .1, .3, lland 5, .control .conductors'.62l, .623, 624 .and 525 are .successively grounded .to .cause thesuccessive operation .of the select magnets .80.I,.803, .804 .and 805`and the successive operation of .hold .magnets 8|.I., 8.I.2, 8|.3 and.8|.4 .under the control of relays 83.6 and 63.9 in the .mannerpreviously .described whereby .the cross-.point .contact .sets .82.I,822, 823 `and A824| are operated to register 4the called line numerical.digits 1, .3,.4 and 5.

Following the registration of `thelast .called .line numerical digit,the :sender .progress switch is advanced to its next terminal positionin which it normally .controls the .ticket printer of the associatedtrunkto print .a .dash to separate the printed calledline numericalYdigits .from the class and rate .digits .to be printed subsequently.But since the sender .is .associated with the recorder, the progressswitch .connects ground to control conductor 6.4.6 for operating relayB32, whichconnects ground to conductors ,833 and S34 forcontrolling `the.advance of the .sender progress switch into a position for .controlling.the registration `of a digit indicative of the class of the callingline whereupon vrelay .6.32 releases.

In the Anext two positions oi. .the .sender progress switch .assuming.that the -class digit vof the calling line registered .in the` senderis `5 and that the .digit indicating .the rate to be 4charged for theinitial period .of conversation .for .the .call as .registered in `thesender .is 2, control conductors .625 and 622 are successively groundedto cause the successive .operation of select magnets 805 and 802 and thesuccessive-operation .of hold magnets 8I'5 andl 816 .under the controlof relays 636 .and S39 in the manner previously described whereby thecross-point contact sets 8.25 and 826 are operated .to register theclass digit 5 and the rate 'digit 2, respectively.

Following the complete registration of the digits of the called oiicecode :in the sender, the sender caused the establishment of an operatingcircuit or identier-connector-relay v|; of the, trunk `to cause suchthree-position polarized relay to operate its lower contacts therebyestablish-ing the circuit for cut-through relay 2|9. With :relay .2I18.operated and relay 201 also operated a circuit is established fromground through the -upper winding oil supervisory relay Y 220', theupper No. 3 :contacts of .relay 20.1, 'over' the lower back contact ofreversing relay 22I,

.through the upper left winding of repeating coil 222, over the uppercontacts of relay 2i8, the tip conductor '522.3 Yof trunk |06, tipbrushes of selector I 02 .and line-finder IBI, through the privatebranch exchange 400 returning over the ring brushes of line-finder I0.I`and selector |02,

ring conducto-r .224 of trunk zI-OB, the lower 4contacts of relay 21.9,the lower left winding kof repeating -coil 222., the upper back contactof relay 22|, .the upper No. .2 contacts of relay 207 to bat terythrough the lower winding of relay 220. Relay 22,0 thereupon .operatesand establishes .a holding circuit for relay 285- extending from groundover the lower contacts. oi relay 205, Vover the contacts of relay 220to battery through the winding of relay 205. i

After the sender has completed the `establishment of the connection tothe wanted line .and has transferred .all lof the data registeredtherein relating to the established toll. connection, the sender, 40|,sender-finder 4.00 and the sendertrunk-connector are all released in themanner V upon lrelay. .2.25 operates in turn -establishing an obviouscircuit for vreversing .relay .22 I. As soon following the operation ofrelay v22| as ground is applied over conductor 212-6 :from the timinginterruptor circuit, .a .circuit .is :completed vover the inner lowernormal `contactsof relay 221, over the .lower contacts of relay 22|,over the inner lower ycontacts .of relay 218 and through the lowerwinding .of relay 22.1 to battery. Relay 221 thereupon operates, lockingto the direct ground over .its 'inner .lower alternate vcontacts andconnecting ground over lower Acontacts and the upper back fcontactrof.relay 228 .to conductor .22.8 .extending to 'the timing interruptorcircuit Vto start -the .measurement of a. time interyal. Aftera twoseconds delay ground will'be applied Ato 'conductor 230 at the timingintermipter circuit thereby completing a circuit 'over the uppercontacts yof trelay 221 .and over `the in` ner upper normal contacts andthrough the winding of relay 2.28 to battery whereupon relay 2.28operates and locks over its inner upper a1- ternate contacts and the.inner .lower contacts of relay .2D-'I .to ground over the .inner Auppercontacts of relay 205.

With relay 228 operated ,ground is .connected over its .upper contactstoconductor 2li for providing a lock-ing circuit over the inner upperfront ycontact and through the upper Winding Aof relay .20.1 to holdsuch relay operated and to establish a circuit .from conductor 2li 'overbrush 325 of Itrunk-grinder 300, over the lower No. 5 lcontacts of relaySIS, yconductori .and over .the back contacts of slow-to-l-release relay9II to battery through the winding of relay vSI2. Relay .9| 2 thereuponoperates and with relay 228 operated a timing pulse circuit islestablished from ground over a vcontact of relay 23|, which is operatedonce every fifteen .seconds `eby the clock operated timer 232, over thelowercontacts of relay 228, the :lower iront contact of relay 201,conductor 2-I 5, brush 321| of trunk-finder 300,:ovcr the lower No. 4contacts of relay .349, conductor 330t over the inner 4upper contacts ofrelay SI2, over the upper No. 3 back contact of relay 813 to battterythrough the winding of stepping magnet r| of the units timing register980 of the recorder. Thus at iifteen-second. intervals the brushes oftiming register are advanced step by step. If the conversation continues.until such timing register 800 advances its .brushes 902i, BIM and 8.05to the No. 38 terminalsof their associated arcs, a circuit Will ,beclosed from ground applied over .the upper No 3 back contact of relay8I3 thence as traced through. the winding Iof the stepping magnet 90| ofregister 800 and also over the upper No. 2 back .contact of relay `SIMover brush B02 and the No. ,1.6 terminal of its arc, over the lower No.3 back contact of relay 8M to battery through the winding of steppingmag,

net of the tens timing register 850. The operation of magnet 195| willadvance .register 950 one terminal step thereby causing register

